Check of serviceability of functioning of the vacuum amplifier of brakes

PERFORMANCE ORDER

1. Check of serviceability of functioning of the vacuum amplifier of brakes is made from a driver's place. 2. At completely squeezed out pedal of a foot brake start the engine, - the pedal should fail a little more. 3. At the working engine some times squeeze out a pedal of a foot brake. The size of a course of a pedal should remain a constant. 4. Squeeze out a pedal, muffle the engine and continue to keep a pedal pressed during about 30 seconds during which it should not neither fail more low, nor rise. 5. Again start the engine, allow to it to work for about a minute, then again muffle. Again some times firmly squeeze out a pedal, - the course size should be reduced with everyone качком. 6. In case of negative result of the described check the servo-driver of the vacuum amplifier of brakes is subject to regenerative repair or replacement (the Brake system see the Head).